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Finding the Fourth Proportional to 93,450.60, 128,963.94 and 53,162.76

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Solution

The fourth proportional to 93,450.60, 128,963.94 and 53,162.76 is: 73,365.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,450.60 : 128,963.94 = 53,162.76 : x
  2. Step 2: Convert to fraction form
    93,450.60/128,963.94 = 53,162.76/x
  3. Step 3: Cross multiply
    93,450.60x = 128,963.94 × 53,162.76
  4. Step 4: Simplify right side
    93,450.60x = 6,856,078,990.87
  5. Step 5: Solve for x
    x = 6,856,078,990.87/93,450.60
  6. Step 6: Final answer
    x = 73,365.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.